pVTMaster

pV/T Master

Introducing...

pV/T Master ™ - Volumetric lab in-one

The pV/T Master™ is a novel and versatile volumetric analyzer that allows implementation of variety of static and dynamic techniques by using the core instrument and optional or user provided ancillary hardware. As presented, the basic instrument can be used for volume (density) measurements of any solid state samples and compressibility studies of cellular materials (foams) using gas expansion technique or time domain pycnometry. The open-architecture design allows for using all resources for variety of research activities.

Design features (basic instrument, as shown):

Automatic and Manual modes (hardware and software)
Volume (density) determinations using pressure or vacuum
Compressibility profiles of foams versus pressure and pressure intervals
Software controlled miniature vacuum pump (<10 kPa capability)
Mass flow controller for implementing of dynamic operation
Precision low pressure regulator for setting repeatable pressure values
Absolute pressure transducer (typically 50 psia, 340 kPa)
Hermetically closed sample holders (No elutriation for fine powders)
(Optional) flow-through sample holders for controlled purge
Introduction of time-domain pycnometer
Added ports for usage of analyzer resources
Unique software design to create experiments from preprogrammed functionalities
Extended software features beyond pycnometry for recording data from various experimentation
Easy interfacing with external hardware to implement additional capabilities
Availability of additional temperature sensor (RTD, typically -50 to 150 C)

Possible extensions:

Non-isothermal measurements using external sample chambers at different temperatures
Easy extension of the sample volume range well over 100 mL
Bubble point technique
Liquid expulsion porometry
Gas transfer rates through various barriers, like films, filters
Flow rates measurements through packed beds of powders
Testing of thermal degradation of plastic materials
Moisture content analyzer - dynamic water vapor desorption at various temperatures and flow rates using RH probe for water mass measurements
Headspace extraction at controlled temperatures using either closed system or flow-through mode (dry gas or humidified gas from external RH generator)
Surface area analyzers, e.g. by flow through packed beds of powder – permeability technique or physical sorption using cryogenic

temperatures within the transducer pressure range (0 - 340 kPa)

Foam Compressibility vs Pressure / Vacuum